The Omron 61F-GPN-V50-AC110 is a leak detection relay from the 61F series, designed to sense conductive liquid presence or absence via two probe electrodes. It operates on a 110VAC supply and outputs a SPDT relay contact rated 3A at 250VAC, so it can directly switch a small pump, alarm, or PLC input without an interposing relay. Sensitivity is adjustable from 0 to 50 kOhm, which means you can tune it for different liquid conductivities — tap water, deionized water, or even certain process fluids — without changing the probe hardware. That adjustability is the main feature that distinguishes this variant from fixed-sensitivity 61F models.
Termination is plug-in, which makes field replacement fast — pull the old relay, plug in the new one, no rewiring. The operating range is -10°C to 50°C, fine for indoor control cabinets but not for direct outdoor exposure or freezer environments.